REPLACE DASHBOARD LIGHT

1994 Opel Corsa

Interior problem
1994 Opel Corsa

Hi the center dash board lights do not work. The lights behind the heating control unit and the rear window de-frost.
I have checked the fuse and it's good. I took the radio out to try to reach behind the panel but can reach it. So how do I remove the panel to replace the lights, behind this center dash?
Thanks